CN102414459B - A roll for a fibre web machine - Google Patents
A roll for a fibre web machine Download PDFInfo
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- CN102414459B CN102414459B CN200980158808.XA CN200980158808A CN102414459B CN 102414459 B CN102414459 B CN 102414459B CN 200980158808 A CN200980158808 A CN 200980158808A CN 102414459 B CN102414459 B CN 102414459B
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- resin
- roller
- body material
- curing agent
- functional layer
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0233—Soft rolls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
Abstract
The present invention relates to a roll for a paper, board, finishing or tissue machine, said roll comprising a roll body and a cover arranged on said roll body, said cover comprising a bottom layer comprising matrix material and fibres and a functional layer comprising matrix material and fibres. In a typical roll according to the present invention, the glass transition temperature of the matrix material of the bottom layer is at least 20 C lower than the glass transition temperature of the matrix material of the functional layer.
Description
Technical field
The present invention relates to the roller for fiber web machine (fibre web machine), described roller comprises the body of roll and is placed in cover on the described body of roll, and described cover comprises the bottom containing body material and fiber and the functional layer containing body material and fiber.
Background technique
The roller that the such as fiber web machine of paper machine, board and box lining machine, ornamenting machine (finishing machines) and thin-paper machine (tissuemachines) uses several dissimilar, such as pressure roller (press rolls), suction roll (suction rolls) and calender roll (calender rolls).Known have usually can be coated with polymeric material by these rollers of the cylindrical roll body of the preparation of metals of such as cast iron or Hardened Steel.
Especially, when referring to calender roll, the effect of cover is important to operation, reason is that paper web etc. usually (is not namely had the support of fabric) when not supporting lead calender, and guiding is coated with the nip (nip) formed between the calender roll of polymer and the pair roller (hard-faced counter rolls) of hard-surface.In this nip, paper web directly contacts with roller surface thus.
As described in, calender roll and other roller have multiple impact to paper web, namely on the one-tenth gloss of paper and the impact of smoothness and Paper bulk (paper bulk).The size of calender roll normally length is 3-12m, and diameter is 400-1500mm.The order of magnitude of the linear load of these rollers can up to 300-600N/mm.
Usually, in hardness, have difference between polymerization cover and the metal body of roll, this difference causes shearing force in loading situation on metal-polymer interface.In order to make this minimum shear forces, polymeric cover is by several layers of preparation of different hardness character.Usually, described polymeric cover is two-layer, comprises the functional layer being positioned at bottom on metal body and being positioned on bottom, and the hardness of bottom is lower than the hardness of metal body, but higher than the hardness of functional layer.
Another problem of polymerization roller cover is that polymerization cover is different with the thermal expansion coefficient of the metal body of roll, and is polymerized cover in manufacturing procedure, is usually easy to shrink in the solidification process of cover.This causes residual stress in cover, and this stress destroys the performance of cover conversely.The especially individual problem of residual stress in the cover of hot setting, and this stress causes shorten the working life of roller usually.
In the manufacture process of cover, the different heat expansion coefficient of material can cause residual stress in finished product cover.Then this residual stress can cause the layering of in use cover and performance thereof and the problem of degeneration comprehensively.
The method limiting these problems is using surface layer as independently pipe casing, then by introducing bonding layer and described independently pipe is attached to the body of roll being coated with bottom between bottom and surface layer.But the method cost is very high and need several manufacturing procedure.Also fibre-reinforced cover can not be manufactured by the method.
Document US 5,958,533 proposes to reduce the problem caused by chemistry and thermal shrinkage by introducing intermediate compression layer between the metal body of roll and outer cover.Described compression layer can by the three dimensional fabric manufacture being filled with resin, and this resin can in the temperature-curable lower than the solidifying temperature of described cover.Described compression layer can also have the thickness needed for contraction, thus does not need to fill, or described compression layer can be prepared by the fusible material melted away when cover solidifies.
Document WO 2004/103582 proposes another scheme for reducing residual stress, and wherein surface layer solidifies before basic unit.
Summary of the invention
An object of the present invention is prior art Problems existing to be minimized or eliminates even completely and improve method disclosed in prior art.
An object of the present invention is to provide the method manufactured for the polymerization cover of roller, the method is simple, easy technically and implementation cost is low.The roller that the residual stress that another object of the present invention is to provide wherein cover is minimized.Another object of the present invention is to provide the roller of the durability under high loading with improvement.
Therefore, the present invention relates to the roller for paper machine, board and box lining machine, ornamenting machine or thin-paper machine, described roller comprises the body of roll and is placed in cover on the described body of roll, and described cover comprises the bottom containing body material and fiber and the functional layer containing body material and fiber.In typical roller according to the present invention, the glass transition temperature of the body material of described bottom is lower than the glass transition temperature of the body material of described functional layer at least 20 DEG C.
Embodiment
As will be described, have now found that, when lower than the glass transition temperature of the body material of functional layer at least 20 DEG C of the glass transition temperature of the body material of bottom, can significantly improve tectal performance.Glass transition temperature Tg is measured by differential scanning calorimetry (DSC).Be shown in standard ISO 11357-1 and ASTM E1356-08 by the General Principle of dsc measurement Tg, both can exchange use.
Advantage according to roller of the present invention is: due to the difference of the glass transition temperature of the body material of two layers, by sclerosis at high temperature with guarantee to be formed residual stress that the cooling of cover causes is only at the temperature that the glass transition temperature of the body material than bottom is low.Also think, because the thermal expansion of the body material of bottom is higher than its glass transition temperature, when expanding in heating process, bottom also makes functional layer expand.Respectively, when in cooling procedure bottom shrink be greater than functional layer time, the thermal shrinkage of functional layer is compensated and thus because this reducing the residual stress that thermal shrinkage causes.These two combinations cause residual stress to be significantly less than the cover manufactured according to prior art.
Residual stress comparatively in a small amount causes the improved properties of roller cover and roller, especially in the opposing to loading, impact resistance, resistance to cracking and wearing and tearing.In addition, owing to having less stress between the metal body of roll and cover, cover adheres to the body of roll better.
In addition, think and use the polymer of lower Tg that cover can be made to solidify better in bottom.In fact, the solidification of cover can be realized with higher degree.Usually, the interface of bottom and the body of roll is the most difficult point realizing solidification (sclerosis) temperature in the manufacture process of roller cover.When the polymer using Tg lower in bottom, required solidifying temperature is also lower, and is therefore easier to realize.Therefore, the bottom layer realization solidification of higher degree and the performance of finished product cover can be optimized.
The glass transition temperature of the body material of bottom is therefore low than the glass transition temperature of the body material of functional layer at least 20 DEG C.The difference of glass transition temperature can be, such as 25 DEG C, 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C, 50 DEG C, 55 DEG C, 60 DEG C, 65 DEG C, 70 DEG C, 75 DEG C, 80 DEG C, 85 DEG C, 90 DEG C, 95 DEG C, 100 DEG C or even higher.This difference can also be selected from the scope from 20 DEG C, 30 DEG C, 40 DEG C, 50 DEG C, 60 DEG C, 70 DEG C or 80 DEG C to 25 DEG C, 30 DEG C, 35 DEG C, 45 DEG C, 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C or 100 DEG C.Think that compared with the cover of the matrix only with high Tg, the difference of glass transition temperature is larger, is more of value to object of the present invention.Usually, the glass transition temperature being applied particularly to the functional layer in calender is, such as at least 100 DEG C and be at most 200 DEG C.In fact, be coated with the performance of the roller of polymeric layer primarily of surface layer, namely functional layer determines.The glass transition temperature of the bottom in this application is at least 80 DEG C.
In order to realize this species diversity of the glass transition temperature between bottom and the body material of functional layer, there are several may.In fact, such as different resins may be used in said layer but identical curing agent.Another possibility is at the identical resin of two-layer middle use but different curing agent.Another possibility is in different layers, be used in chemically diverse resin.
Below list the example of some modes of the difference obtaining at least 20 DEG C in glass transition temperature.
A) identical with the base resin of functional layer for bottom, but the resin of functionalized layer has extra resinousness component.Such as, the resin of bottom is selected from epoxy resin, such as bisphenol-A or Bisphenol F.The resin of functional layer and the resin-phase of bottom are together, prerequisite has added polyfunctional epoxy resin, the triglycidyl ether (TGPAP) of such as para-aminophenol, N, N, N ', N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM) or epoxy-Novolak resin.The object of this polyfunctional epoxy resin improves the glass transition temperature of functional layer, thus for finished product cover brings the surface properties of expectation, such as, to the tolerance of higher temperature.Such as, bottom comprises resin Bisphenol F, bisphenol-A or its mixture and curing agent is 4,4 '-methylene dianiline (MDA) (MDA) or diethyl toluene diamine (DETDA).In functional layer, the resin of at least 20% is substituted by multifunctional resin, the triglycidyl ether (TGPAP) of such as para-aminophenol or N, N, N ' and, N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM).
B) bottom is identical with the base resin of functional layer, but modifies with the resin of resin to bottom reducing glass transition temperature.As an example, the resin of above a) item may be used for bottom and functional layer, and the modified resins of bottom is such as aliphatic epoxy resin.Other advantage can also be obtained thus, such as, due to the workability of the improvement of the bottom caused compared with low viscosity of resin.Such as, bottom and functional layer include as curing agent 4,4 '-methylene dianiline (MDA) (MDA) or diethyl toluene diamine (DETDA) and as the Bisphenol F of Primary resins, bisphenol-A or its comprise triglycidyl ether (TGPAP) or the N of the para-aminophenol of at least 20% further, N, N ', the mixture of N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM).The resin Composition of bottom comprises the aliphatic epoxy resin of 10-30% further.
C) bottom and functional layer resin-phase with and two-layerly all use identical curing agent, but to be modified by the curing agent of component to bottom causing matrix resin to have lower glass transition temperature.For bottom and functional layer resin can such as with use in above a) item identical, and the curing agent used can for such as aromatic polyfunctional amine be if aromatic diamine, alicyclic polyfunctional amine are as the mixture of alicyclic diamine or different polyfunctional amine, but the curing agent of bottom comprises the mixture of such as polyetheramine, fatty amine, aliphatic polyfunctional amine or different amine extraly.Such as, bottom and functional layer include as curing agent 4,4 '-methylene dianiline (MDA) (MDA) or diethyl toluene diamine (DETDA) and as the Bisphenol F of resin, bisphenol-A or its comprise triglycidyl ether (TGPAP) or the N of para-aminophenol further, N, N ', the mixture of N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM).The curing agent of bottom comprises trien (TETA), the 2-methyl isophthalic acid of 20-50%, 5-pentane diamine or polypropylene oxide triamine further.
D) bottom and functional layer resin-phase with but employ different curing agent in different layers.Here different curing agent means that the curing agent of bottom does not comprise the curing agent of functional layer.The curing agent of bottom is at the curing agent being chemically substantially different from functional layer, and the curing agent of bottom causes lower glass transition temperature.The example of curing agent is aromatic amine, cycloaliphatic amines and composition thereof; Polyetheramine, aliphatic polyfunctional amine, epoxy acid anhydride, polyamide, imidazoles and cdicynanmide (dicyanoamides).The curing agent of functional layer can be, the mixture of such as aromatic amine or cycloaliphatic amines or different amine, and the curing agent of bottom can for such as cycloaliphatic amines, polyetheramine or the aliphatic amine causing the glass transition temperature of matrix polymer lower.Such as, bottom and functional layer include as the Bisphenol F of resin, bisphenol-A or its comprise triglycidyl ether (TGPAP) or the N of the para-aminophenol of at least 20% further, N, N ', the mixture of N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM).Functional layer comprises the aromatic amine as curing agent, such as 4,4 '-methylene dianiline (MDA) (MDA) or diethyl toluene diamine (DETDA), bottom comprises the cycloaliphatic amines as curing agent, as 1,2-DACH (DACH) or IPD (IPDA), 4,4 '-di-2-ethylhexylphosphine oxide (cyclo-hexylamine) (PACM), or aliphatic amine, as trien (TETA), 2-methyl isophthalic acid, 5-pentane diamine or polypropylene oxide triamine, or the mixture of further cycloaliphatic amines and aliphatic amine.
E) resin of bottom and curing agent are chemically being different from resin and the curing agent of functional layer, thus make functional layer have required character and bottom has lower glass transition temperature.The example being suitable for the resin of described layer can be thermosetting polymer and thermoplastic polymer, such as polyolefin, polyester, polyamide, polyether-ether-ketone (PEEK), polyamidoimide (PAI) and epoxy.Such as, bottom is by epoxy hardener and amine manufacture, and Tg is 100-150 DEG C, and functional layer comprises thermosetting resin, as bismaleimides or cyanate (syanate ester) that Tg is greater than 200 DEG C.
When carrying out of the present invention, think that most suitable scheme is that above a) item is listed, namely the resin of different layers has substantially identical fondational structure, but the resin of functional layer has been supplemented with multifunctional resin.
Following table gives some instantiations, wherein alphabetical a-e refer to listed above those.
Abbreviation:
Bisf-A=bisphenol A epoxide resin
Bisf-F=bisphenol F epoxy resin
MDA=4,4 '-methylene dianiline (MDA)
DETDA=diethyl toluene diamine
The triglycidyl ether of TGPAP=para-aminophenol
TGDDM=N, N, N ', N '-four glycidyl group-4,4 '-diaminodiphenyl-methane
TETA=trien
MPDA=2-methyl isophthalic acid, 5-pentane diamine
POPTA=polypropylene oxide triamine
DACH=1,2-DACH
IPDA=IPD
PACM=4,4 '-di-2-ethylhexylphosphine oxide (cyclo-hexylamine)
Mix=mixture
Those skilled in the art also know, and in order to obtain required glass transition temperature difference, can use identical component in bottom and functional layer, but ratio are different.
Those skilled in the art easily can provide the resin of other type, and in fact it need not be based on epoxy resin and also can be thermoplastic resin.Therefore, resin listed above and curing agent are only as an example.
Therefore, advantage of the present invention is, can optimize the character of this layer, and this does not affect the character of functional layer by suitably selecting the body material of bottom.
Can also introduce other layer in cover, and in this case, preferably there are differences between the glass transition temperature of each layer, the glass transition temperature of body material radially increases from bottom to functional layer.
According to the embodiment of the present invention, the second resin is the mixture of the first resin and the 3rd resin, and wherein the 3rd resin improves the glass transition temperature of the second resin.According to another implementation of the invention, the first resin comprises the second resin modified by the 4th resin, and wherein the 4th resin reduces the glass transition temperature of the first resin.
Also may the first resin and the second resin-phase with and the first curing agent comprise the second curing agent and reduce the BSA of glass transition temperature of the first resin.First resin and the second resin can also be identical and the first curing agent can be different from the second curing agent.
According to a mode of execution more of the present invention, first resin and the second resin are selected from epoxy resin, as 4,4 '-dihydroxy-2,2-diphenyl propane (bisphenol A epoxide resin), two (the chloro-2-hydroxypropyl of 3-) ethers (bisphenol F epoxy resin) and its mixture.3rd resin can be polyfunctional epoxy resin, the triglycidyl ether (TGPAP) of such as para-aminophenol, N, N, N ', N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM) and epoxy-Novolak resin.4th resin can be aliphatic epoxy resin.
Preferably, the first hardening agent and the second hardening agent can be selected from aromatic polyfunctional amine, alicyclic polyfunctional amine and its mixture.BSA is optional from polyetheramine, aliphatic amine, aliphatic polyfunctional amine and its mixture.In addition, the first curing agent and the second curing agent can be different and be selected from aromatic amine, cycloaliphatic amines and composition thereof, polyetheramine, aliphatic polyfunctional amine, epoxy acid anhydride, polyamide, imidazoles, cdicynanmide and composition thereof.
According to a mode of execution more of the present invention, the first resin is different with the second resin and be selected from thermosetting property and thermoplastic polymer, as polyolefin, polyester, polyamide, polyether-ether-ketone (PEEK), polyamidoimide (PAI) and epoxy.Being suitable for inorfil of the present invention is, such as glass or boron fiber.Being suitable for organic fiber of the present invention is, such as polyacrylonitrile, polyamide, aromatic copolyamide and carbon fiber.The type of fiber can be weaving or non-thermoplastic felt or roving fibers.Non-thermoplastic felt can be manufactured by Hydroentangled, mechanical acupuncture or tackiness agent bonding.
The fiber used in bottom can be, such as glass fibre, carbon fiber, to aramid fiber (para-aramide fibres) or the mixture to aramid fiber and glass fibre.The mixture of fiber can be used with the form such as which using the textile fabric of two or more fibers.Typical fiber for functional layer is, such as, to aramid fiber or polyester fibre.The diameter of the fiber used can be 0.1-50 μm, preferred 1-20 μm, and typical example is diameter 10 μm.
Cover of the present invention can comprise filler.Utilize filler, the character of cover can improve or its cost can reduce.Usually, use filler to improve wear resistance and to adjust matrix rigid and hardness.Being applicable to filler of the present invention is: mineral filler, such as metal, pottery and mineral filler, and such as many variable grain forms are as aluminium oxide, silica, carbide, nitride, glass, silicate, wollastonite and the mica of powder, ball, pearl, fiber etc.; With the organic fill of synthesis, such as synthetic polymer is if UHMWPE, synthetic fiber are as short fibre as an example, chopped strand, powdered fiber, aliphatic or aromatic copolyamide.
The amount of the filler in cover can change.Such as, in finished product cover, the amount of filler radially can increase the end of to top.Preferably, bottom is not containing any filler.This forms body material by resin and is formed thus evenly and the bottom of tool resistance and make the fiber pervasion of bottom improve.This further enhancing the adhesion between bottom and the body of roll conversely.In addition, the bottom of filler is not preferably contained also because the better workability of resin and its higher thermal expansion coefficient.Therefore, not containing the advantage that the bottom of filler or the cover not having many prior aries containing the base area of filler of the close body of roll do not have, the cover of the prior art utilizes identical resin and curing agent in whole mantle thickness.
Cover of the present invention can also comprise such as, for promoting the processing of cover and improving other additive and the processing aid of physical property, polymerization initiator, activator and accelerant, curing agent, plasticizing agent, heat stabilizer, antioxidant, antiozonant, pigment, air-release agents, filler wetting agent and dispersing agent, levelling agent, defoamer, dispersion stabilizer, reactive diluent etc.These reagent can mix with matrix before contacting with lamination coating.
Such as, the additive of the adhesion strengthened between the body of roll and cover can be used at bottom.In addition, according to the present invention, can use the additive that can not be used in functional layer at bottom, vice versa.
According to the embodiment of the present invention, can also manufacture more than two-layer, the cover of such as three layers, four layers, five layers or six layers.Such as, that can mention has the cover comprising three layers, wherein bottom comprises fiber according to prior art and body material, mesosphere comprises the body material of fiber and lower than the glass transition temperature of the body material of functional layer such as at least 20 DEG C of glass transition temperature, and wherein said functional layer is placed in the top in this mesosphere and comprises body material and fiber.This configuration also reduces the formation of residual stress in functional layer and prevents it to be transferred to bottom.This also causes the temperature-resistant of bottom to improve, and this may be used in many application.
The invention still further relates to the method for the cover for the manufacture of the roller for paper machine, board and box lining machine, ornamenting machine or thin-paper machine, described method comprises the steps: to provide the bottom comprising body material and fiber be positioned on the body of roll, and provides the functional layer comprising body material and fiber be positioned on described bottom.In typical method of the present invention, the glass transition temperature of the body material of described bottom is lower than the glass transition temperature of the body material of functional layer at least 20 DEG C.
Therefore can have the polymerization roller cover of the character of improvement with efficient, simple and relatively inexpensive mode manufacture according to method of the present invention.
Manufacture as follows according to an example of roller cover of the present invention.The first layer of the braided glass fibre fabric permeated by the first resin lower with glass transition temperature by being such as wound around is coated in it metallic roll.The second layer of the non-woven glass fiber mat with described first resin infiltration is coated in, such as, is wound around on the first layer.This two-layer bottom defining cover.The non-woven felt of the second layer such as can have with the identical of functional layer or its character being suitable for mesosphere.The object with the layer of non-woven felt is to provide the layer with the resin more than first layer, thus makes it be easier to distortion than the first layer prepared by weaving mat and relax.Non-woven layer also have to provide between the bottom and functional layer evenly the advantage at interface.
In order to prevent the problem that can be caused by the mixing of the resin of the second layer and functional layer below and there is uniform interface for the formation of functional layer, if needed, above-mentionedly two-layerly at first can be made it smooth by Procuring by rotating and/or rub.In fact, as the 3rd step, rolled up by the non-woven felt that the resin higher with glass transition temperature is permeated and form functional layer on the second layer on axle.Subsequently, make cover Procuring with infrared radiation, and terminate solidification in stove.
The solidifying temperature of stove is significantly higher than the glass transition temperature of the body material of bottom.When making cover cool after hardening, functional layer starts when temperature is reduced to below its glass transition temperature to shrink.Bottom is still in the elastic state higher than its glass transition temperature at this moment and therefore, it is possible to relax and be also out of shape to a certain extent, does not cause the stress caused due to the contraction of functional layer thus between cover and the metal body of roll.Only just start when the temperature of bottom is reduced to below its glass transition temperature to form these residual stresss, and therefore the amount of residual stress significantly reduces.
The invention still further relates to the calender for paper machine, board and box lining machine or ornamenting machine comprised according to roller of the present invention.Calender can be so-called soft calender or multinip calender (multinip calender).Soft calender stiff dough roller and according to the roller being coated with polymer of the present invention between include nip.Typical multinip calender comprises the multiple rollers being placed in and pushing up each other.All or some calender rollers can comprise according to cover of the present invention.Especially, the top of multinip calender and/or low roller can have according to cover of the present invention.The invention still further relates to for the manufacture of or process fibrous web and comprise at least one machine according to roller of the present invention.May for the manufacture of or the fiber web machine of process fibrous web be calender (off-line calender) etc. under calender (on-line calender), line on such as paper machine, board and box lining machine, thin-paper machine, line.
All mode of executions and feature disclosed in this specification are all applicable to all different aspects of the present invention, the mode of execution of namely listed roller as do suitable variation be also suitable for as described in method, calender and machine.
In this article, term " comprises " will be interpreted as open term, namely can also introduce other features except listed.
experimental section
The various combination of the material for bottom and functional layer is tested.Glass transition temperature Tg is measured by differential scanning calorimetry (DSC).Result is shown in Fig. 1 and 2, and the temperature wherein on y coordinate is with DEG C to represent.
embodiment 1-4
The various combination of test hardened material.The curing agent of the other types be suitable for use in hardening epoxy resin is utilized to modify diethyl toluene diamine (DETDA) curing agent.The glass transition temperature (Tg) of mixture is measured by differential scanning calorimetry (DSC).Following combination is tested (abbreviation as in table 1):
Embodiment 1:100%DETDA
Embodiment 2:80%DETDA/20%TETA (trien)
Embodiment 3:80%DETDA/20%MPDA (2-methyl isophthalic acid, 5-pentane diamine)
Embodiment 4:80%DETDA/20%POPTA (polypropylene oxide triamine)
Result is shown in Fig. 1, and the temperature wherein on y coordinate is with DEG C to represent.As can be seen from Figure 1, the Tg value of the curing agent DETDA that Tg is higher is reducing about 25-30 DEG C with during suitable amine-modified DETDA.When the curing agent of embodiment 2-4 is used in the bottom of roller cover and the curing agent of embodiment 1 is used in functional layer, cause the glass transition temperature of bottom lower, prerequisite is that the matrix resin of described layer does not have other to change.
embodiment 5-9
The various combination of test resin material.Utilize the polyfunctional epoxy resin N of different proportion, N, N ', N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM) modifies the epoxy resin of bisphenol-f type.The glass transition temperature (Tg) of described mixture is measured by differential scanning calorimetry (DSC).Following combination is tested.
| Bisphenol F/TGDDM ratio | The difference (DEG C) of Tg when comparing with embodiment 5 | |
| Embodiment 5 | 100/0 | n.a. |
| Embodiment 6 | 75/25 | 22 |
| Embodiment 7 | 50/50 | 30 |
| Embodiment 8 | 25/75 | 65 |
| Embodiment 9 | 0/100 | ＞100 |
N.a.=is inapplicable
Result is shown in Fig. 2, and wherein the temperature of y coordinate is with DEG C to represent.As can be seen from Figure 2, the Tg value of bisphenol F epoxy resin increases severely.When substituting the bisphenol F resin of 1/4 with TGDDM, the Tg value increase of resin is greater than 20 DEG C.When using the resin of embodiment 5 in bottom when using the resin of embodiment 6-8 in the functional layer at roller cover of the present invention, the Tg difference between described layer is greater than 20 DEG C and creates benefit of the present invention.In addition, the resin of embodiment 6 can be used in bottom, in functional layer, use the resin of embodiment 8.The invention is not restricted to the above ratio provided, but when the Tg difference having 20 DEG C between bottom and functional layer realizes the present invention.In addition, manufacture and test the roller had according to cover of the present invention.
embodiment 10
The length of nip simulator be 20cm, diameter is that the steel rider of 20cm manufactures cover of the present invention with it, wherein
A) weaved cotton cloth by the braided glass fibre of winding bisphenol F epoxy resin infiltration and on the steel body of roller, manufacture bottom; At its surface wrap non-woven Kevlar layer of fibers to form good interface between bottom and functional layer;
B) by be wound around with comprise Bisphenol F epoxy and TGDDM (75/25) epoxy infiltration sparse fiberglass woven cloth and on bottom manufacturing function layer; With
C) at the temperature of about 160 DEG C, the cover prepared thus is solidified.
comparative example
Except bottom also comprises the TGDDM as curing agent, manufacture the cover of comparative example according to embodiment 1.
In the test of cover, use and comprise length for 20cm and diameter is in the nip imitator of two rollers that nip contacts with each other for 20cm, maximum unit linear load is 400-600kN/m.One of described roller is the metallic roll of firm, and another roller is in embodiment 10 or the roller manufactured in a comparative example.Two kinds of rollers are all through overheated adjustment.
By genemotor, roller is rotated, rotating speed is 800,1200 and 1400rpm (rev/min).The durability of cover is measured for different linear loads, until see the visual indication of infringement, or the most frequently, be measured to known to very in a short time or the local superheating causing cover to damage when loading increases (so-called focus).The temperature of cover is monitored to find focus in test process.
Result is shown in Fig. 3.Relatively give the linear load durability with friction speed level, make the endurance of comparative example cover (the left post of every coupled columns) be 100%, and compare with it according to the endurance quality of cover of the present invention.As can be seen from the results, under used each rotational speed level, the ability of the performance of cover of the present invention or its anti-high loading is significantly better than the cover of comparative example.
Claims (23)
1., for the roller of paper machine, board and box lining machine, ornamenting machine and thin-paper machine, described roller comprises the body of roll and is placed in the cover on the described body of roll, and described cover comprises
-comprise the bottom of body material and fiber, and
-comprise the functional layer of body material and fiber,
It is characterized in that, the glass transition temperature of the body material of described bottom is lower than the glass transition temperature of the body material of described functional layer at least 20 DEG C, and
The body material of described bottom comprises the first resin and the first curing agent, and the body material of described functional layer comprises the second resin and the second curing agent.
2. roller as claimed in claim 1, it is characterized in that, the glass transition temperature of the body material of described bottom is lower than the glass transition temperature of the body material of described functional layer at least 40 DEG C.
3. roller as claimed in claim 1, it is characterized in that, described second resin is the mixture of described first resin and the 3rd resin, and wherein said 3rd resin improves the glass transition temperature of described second resin.
4. roller as claimed in claim 1, is characterized in that, described first resin comprises the second resin modified by the 4th resin, and wherein said 4th resin reduces the glass transition temperature of described first resin.
5. roller as claimed in claim 1, is characterized in that, described first resin and described second resin-phase with, and described first curing agent comprises described second curing agent and reduces the BSA of glass transition temperature of described first resin.
6. roller as claimed in claim 1, is characterized in that, described first resin and described second resin-phase with, and described first curing agent is different from described second curing agent.
7. roller as described in any of claims 1, is characterized in that, described first resin and described second resin are selected from epoxy resin.
8. roller as claimed in claim 7, it is characterized in that, described epoxy resin is selected from 4,4 '-dihydroxy-2,2-diphenyl propane (bisphenol A epoxide resin), two (the chloro-2-hydroxypropyl of 3-) ethers (bisphenol F epoxy resin) and its mixture.
9. roller as claimed in claim 3, it is characterized in that, described 3rd resin is polyfunctional epoxy resin.
10. roller as claimed in claim 9, it is characterized in that, described polyfunctional epoxy resin is selected from triglycidyl ether (TGPAP), the N of para-aminophenol, N, N ', N '-four glycidyl group-4,4 '-diaminodiphenyl-methane (TGDDM) and epoxy-Novolak resin.
11. rollers as claimed in claim 4, is characterized in that, described 4th resin is aliphatic epoxy resin.
12. rollers as claimed in claim 1, is characterized in that, described first curing agent and described second curing agent are selected from aromatic polyfunctional amine, alicyclic polyfunctional amine and composition thereof.
13. rollers as claimed in claim 5, it is characterized in that, described BSA is selected from polyetheramine, aliphatic amine, aliphatic polyfunctional amine and composition thereof.
14. rollers as claimed in claim 1, is characterized in that, described first and second curing agent are different and be selected from aromatic amine, cycloaliphatic amines and composition thereof, polyetheramine, aliphatic polyfunctional amine, epoxy acid anhydride, polyamide, imidazoles, cdicynanmide and composition thereof.
15. rollers as claimed in claim 1, is characterized in that, described first and second resins are different and be selected from thermosetting polymer and thermoplastic polymer.
16. rollers as claimed in claim 15, is characterized in that, described thermoplastic polymer is selected from polyolefin, polyester, polyamide, polyether-ether-ketone (PEEK), polyamidoimide (PAI) and epoxy.
17. rollers as claimed in claim 1, it is characterized in that, described fiber is selected from: glass fibre, carbon fiber, aramide-fibre, carbide fibre, polymer fiber and composition thereof.
18. rollers as claimed in claim 1, it is characterized in that, the fiber of described bottom is different from the fiber of described functional layer.
19. rollers as claimed in claim 1, it is characterized in that, described body material also comprises filler and additive.
20. rollers as claimed in claim 1, is characterized in that, described bottom is not containing filler.
21., for the manufacture of the method for the cover of the roller for paper machine, board and box lining machine, ornamenting machine or thin-paper machine, said method comprising the steps of:
-bottom comprising body material and fiber is provided on the body of roll,
-functional layer comprising body material and fiber is provided on described bottom,
It is characterized in that, the glass transition temperature of the body material of described bottom is lower than the glass transition temperature of the body material of described functional layer at least 20 DEG C, and the body material of described bottom comprises the first resin and the first curing agent, and the body material of described functional layer comprises the second resin and the second curing agent.
22. for the manufacture of cellulose fibre web or treatment device, and it comprises the roller according to any one of claim 1-20.
23. as claimed in claim 22 for manufacture or the treatment device of cellulose fibre web, and it is characterized in that, described device is calender.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2009/050294 WO2010122208A1 (en) | 2009-04-21 | 2009-04-21 | A roll for a fibre web machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102414459A CN102414459A (en) | 2012-04-11 |
| CN102414459B true CN102414459B (en) | 2015-07-15 |
Family
ID=43010713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980158808.XA Expired - Fee Related CN102414459B (en) | 2009-04-21 | 2009-04-21 | A roll for a fibre web machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2422098B1 (en) |
| CN (1) | CN102414459B (en) |
| WO (1) | WO2010122208A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012201310A1 (en) * | 2012-01-31 | 2013-08-01 | Voith Patent Gmbh | Roll cover with improved dynamic properties and high resilience |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054405A1 (en) * | 1997-05-30 | 1998-12-03 | Valmet Corporation | Thermoplastic-coated roll, method for manufacture of the roll, composition of thermoplastic coating, method of calendering by means of thermoplastic-coated rolls in accordance with the invention, and paper/board manufactured by means of such rolls |
| WO2001075224A1 (en) * | 2000-04-04 | 2001-10-11 | Metso Paper, Inc. | Method and arrangement for controlling moisture in a multiroll calender |
| CN1608177A (en) * | 2001-12-26 | 2005-04-20 | 山内株式会社 | Fiber-reinforced resin roll and method of manufacturing the roll |
| CN101035993A (en) * | 2004-10-04 | 2007-09-12 | 美卓造纸机械公司 | A roll |
| CN100416117C (en) * | 2003-07-02 | 2008-09-03 | 山内株式会社 | Process for producing resin roll |
| CN101374634A (en) * | 2006-02-01 | 2009-02-25 | 美卓造纸机械公司 | Method for profiling in cd-direction the surface qualities of a fibrous web to be manufactured/treated in a paper/board machine or in a finishing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601920A (en) | 1995-04-06 | 1997-02-11 | Stowe Woodward Licensco, Inc. | Covered roll and a method for making the same |
| JPH09269629A (en) * | 1996-03-29 | 1997-10-14 | Nippon Zeon Co Ltd | Semiconducting rubber roll |
| US6776744B1 (en) * | 1999-07-28 | 2004-08-17 | Advanced Materials Corporation | Method for and devices used in covering a roll core with a resin infused fiber reinforced adhesive under layer and a polymeric top layer, the method including the use of an improved mold tape |
| DE10001409A1 (en) | 2000-01-14 | 2001-09-06 | Voith Paper Patent Gmbh | Elastic roller and method of making it |
| EP1293549B1 (en) | 2000-06-20 | 2005-08-31 | SANYO CHEMICAL INDUSTRIES, Ltd. | Adhesive for resin roll assembly and resin roll |
| FI114237B (en) | 2003-05-23 | 2004-09-15 | Metso Paper Inc | Manufacturing a roll coating e.g. calender roll onto a roll frame involves curing and solidifying a surface layer on a base layer after the base layer has been formed on the roll frame |
-
2009
- 2009-04-21 EP EP09843590.2A patent/EP2422098B1/en not_active Not-in-force
- 2009-04-21 WO PCT/FI2009/050294 patent/WO2010122208A1/en active Application Filing
- 2009-04-21 CN CN200980158808.XA patent/CN102414459B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054405A1 (en) * | 1997-05-30 | 1998-12-03 | Valmet Corporation | Thermoplastic-coated roll, method for manufacture of the roll, composition of thermoplastic coating, method of calendering by means of thermoplastic-coated rolls in accordance with the invention, and paper/board manufactured by means of such rolls |
| WO2001075224A1 (en) * | 2000-04-04 | 2001-10-11 | Metso Paper, Inc. | Method and arrangement for controlling moisture in a multiroll calender |
| CN1608177A (en) * | 2001-12-26 | 2005-04-20 | 山内株式会社 | Fiber-reinforced resin roll and method of manufacturing the roll |
| CN100416117C (en) * | 2003-07-02 | 2008-09-03 | 山内株式会社 | Process for producing resin roll |
| CN101035993A (en) * | 2004-10-04 | 2007-09-12 | 美卓造纸机械公司 | A roll |
| CN101374634A (en) * | 2006-02-01 | 2009-02-25 | 美卓造纸机械公司 | Method for profiling in cd-direction the surface qualities of a fibrous web to be manufactured/treated in a paper/board machine or in a finishing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102414459A (en) | 2012-04-11 |
| EP2422098B1 (en) | 2018-02-07 |
| EP2422098A1 (en) | 2012-02-29 |
| WO2010122208A1 (en) | 2010-10-28 |
| EP2422098A4 (en) | 2017-01-25 |
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Address after: Espoo, Finland Applicant after: Veimeide Technology Co., Ltd. Address before: Helsinki Applicant before: Metso Paper Inc. |
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